[LAU] snd-virmidi not working

Hi,
I understand that the module snd-virmidi can be loaded via modprobe from the
command line. BUT: I cannot get it to work. The module does not pass any data
transferred to it.
What am i doing wrong? I simply connected one MIDI output of things like the
vkeybd to the virtual MIDI port and then connected kmidimon to the virtual
port to see if something is happening. But nothing.
Any helpful hints on this?
kernel is 2.6.29-0.slh.1-sidux-686.
MIDI is working fine otherwise.
Regards,
Crypto.